Blowpipe.



J. H. FLOWER.

BLOWPIPE.

nruonmn FILED MAR. 16, 1909.

936,769. Patented 0011.12.1909.

2 BHEETS-SHEET 1.

11 i wanna J. H. FLOWER.

BLOWPIPE.

APPLICATION FILED MAB.16,1909

Patented Oct. 12, 1909.

2 SHEETS-SHEET 2.

MM 62. QQ Z nucnfoz Guam,

to. Fig. 2 is a. vertica JAMES H. FLOWER, O'F ASHTAB'ULA, OHIO.

Specification of Letters Patent.

Patented Oct. 12. H509.

Application filed March 16, 1909. Serial No. 483.743.

T 0 all whom it may concern:

Be it known that 1, JAMES H..Fi.ownn, a citizen of the United States, residing at Ashtabula, in the county of Ashtabula and State. of Ohio, have invented certain new and useful Improvements in Blowpipos; and I do hereby declare the following to be a. full, clear, and exact. descri vtion oi. the iiivention, such as will enable 0t iers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference markedthereon, which form a part of this specification.

This invention relates to new and useful improvements in standards for blow pipes especially adapted for use of dentists, jewet ers, etc, and comprises various details of construction, combinations and arrange ments of arts which will be hereinafter fully described and then specifically defined in the appended claims.

My invention is illustrated in the accompanying drawings, in whic r- Figure 1 is a perspective view of the standard showing a blow pi e attached therei sectional View through the standard and blow pipe, and Fig. 3 is an enlarged detail showing the parts of the standard disassembled. 7

Reference now being had to the details of the drawings by letter, A designates the base of the device having a standard B with a. circumferential groove l3 adjacent to its upper end. The extreme u 7 or end of said post is tapered as at C, and l) designates a shell adapted to telescope over said post and the inner end of said shell is conical shaped and adapted to rest upon the upper tapering end of the post while the lower end of the post rests upon a shoulder C. It will be noted that the lower end of said shell is provided with a series of notches E, and F designates 9. lug pro'ecting from the shoulder upon said post an adapted to engage one or another of said notches to hold the shell from rotation. Fastened to the circumference of said shell is a spring G, the lower end of which is notched to receive said lug and the upper end of said spring is bent at an an le as at G and asses through the shell, t e inner end of said spring being concaved and adapted to engage the groove in the ost when pressure is applied to the button thereby causing the shell and the standard to be raised together. The spring, however, is

normally out of engagement with said groove and, if the spring is not pushed within the shell, the latter may be taken oil of the post. and standard. 7

The upper end oi the slru'idnnl. has an up crture ll, and l designates a gas pipe having lugs l 'irojocting therefrom which are ap ertured, one of which apertures is threaded and K is a thumb sen-xv passing thr ugh the apertures in the upper end of the shell and said lug and adopted to hold the pipe at any desired angle. Fastener] to one end of said pipe is a plug or cup I which may b removed and a gas nipple may he upplie thereto should it he desired to allow gas to enter directly to the pipe. .l miss a valve in said pipe iu'ovided with a handle J". At one end of said pipe is a. hollow nozzle screwed to the pipe and hi is a needle air jet which posses through the bulb at the end of said pi e, which air jet is a continuation of a tn 9. N running parallel and fastened to said pipe I. Said pipe I is adapted to be connected to any suitable source of supply of gas, either naturul or artificial. A valve Q is mounted within said pipe I and has a stem with a head 0', said valve being provided to regulate if desired the How. of the air front the pipe N" to the pipe I to coniniingle with the "as within the shell about. said nozzle. A pint tube Q extends parallel with the ipe I and communicates with a sli ht ori es in the bulb Q which orifice lea s from the chain ber Q which has a. valve Q therein to regu late the flow of gas through said pilot tube and R is a gas supply pipe lee-ding to said chamber.

In operation, the pilot tube with a minute jet may be continuously burning to avoid the necessity of lighting the main jet any time it is desired to use the apparatus, the flow of gas to the pilot tube being regulated through the valve shown and described and the supply of gas passing through the pipe I from the pipe R regulated throu h the valve J. Air 1s admitted through tie tube N where it makes exit at the et N and coinmin les with the gas in the chamber about the 30L If desired, of course, air from the tube N may be allowed to pass throuoh the duct regulated by the valve 0 into t e gas supply tube, in the event of the gas being too rich.

When it is desired to raise the standard with the pipe and jet, the operator by pressing in upon the spring may cause the inner enc thereof to engage the groove at the upper end of said post. Should it be desired to utilize the pipe independent of the base, the shell will readily rise from the post the spring being normally out of engagement with the groove therein. By the rovision of the notches at the lower en of the shell, which enga e the lug upon the post, the shell may be ield from rotation.

What I claim to be new is 1. In combination with the standard of a blow pipe, a base and a post rising therefrom a shell telescoping over said post, said post IELVlD a groove therein, a spring carried by sait shell and adapted to engage said groove.

2. In combination with the standard of a blow pipe, a base and a post rising therefrom a shell telescoping over said post, said post having a, roove therein, aspring carried by said $1811 and adapted to engage said groove, means for preventing the shell from rotating upon the post.

3. In combination with the standard of a i ried by sald blow pipe, a base and a post rising therefrom, a shell telescopin r over said post, said post having a groove t erein, a spring ears ell and adapted to engage said groove, a lug upon said post, the lower 3 end of said shell having notches adapted to engage said lug.

4;. I n combination with the standard of a blow pipe, a base having a post with a circumferential groove therein, said ost having a shoulder, a lug projecting t erefrom, a shell telescoping over said post and provided with notches in the lower end adapted to receive said lug, a spring fastened to said shell and having an angled portion extending through a slot in the shell and adapted to engage said move as the spring is pushed within the she I.

In testimony whereof I hereunto afiix my signature in the presence of two Witnesses.

JAMES H. FLOWER.

Witnesses:

E. N. Tmron', Y B. C. BLAKESLEE. 

